This code:

import os
import os.path
TARGET='C:/code/python/foo'
base = TARGET
for x in range(200):
    subdirs = os.listdir(base)
    base = os.path.join(base, subdirs[0])
    print base

Produces a TypeError (buffer overflow) when run on a to deeply nested directory for windows to handle:

.. more output here..
C:code/python/foo\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.p
ng\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png\foo bar.png
Traceback (most recent call last):
  File "killdir.py", line 6, in <module>
    subdirs = os.listdir(base)
TypeError: listdir() argument 1 must be (buffer overflow), not str